Orbit Fit and Astrometric record for 02CY154

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 02CY154   
# Created Wed Dec 13 02:37:10 2017
# Orbit generated from Bernstein formalism
# Fitting   13 observations of   13
# Arc:  13.03y
# First observation: 2002/02/06
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
   0.000020   0.019055  -0.000002   0.000232   0.021694   0.000000
# Chi-squared of fit:    28.65 DOF:   20 RMS:  0.26
# Min/Max residuals:    -0.84    0.46
# Exact a, adot, b, bdot, g, gdot:
  1.488692E-05  1.873865E-02  5.200241E-07  2.279552E-04  2.139551E-02  5.628353E-04
# Covariance matrix:
  4.4730E-13  1.6211E-13 -9.4808E-16  2.3684E-15  5.7413E-13  7.7448E-13
  1.6211E-13  1.8955E-12 -1.2045E-14  2.4117E-14  1.9195E-12  7.7080E-12
 -9.4808E-16 -1.2045E-14  1.6309E-13 -1.4342E-14 -1.1966E-14 -4.9049E-14
  2.3684E-15  2.4117E-14 -1.4342E-14  4.2437E-15  2.4652E-14  9.8302E-14
  5.7413E-13  1.9195E-12 -1.1966E-14  2.4652E-14  2.5311E-12  7.9048E-12
  7.7448E-13  7.7080E-12 -4.9049E-14  9.8302E-14  7.9048E-12  3.1422E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.692534  165.558022    0.459625    0.010420   -0.869259  2452311.907233
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:          160.45649 +/-     0.193
Argument of Peri:      240.81912 +/-     0.191
Long of Asc Node:      121.07219 +/-     0.008
Inclination:             0.98000 +/-     0.000
Eccentricity:         0.07534413 +/-    0.0002
Semi-Major Axis:     44.43025450 +/-    0.0069
Time of Perihelion: 2404096.6946 +/-      56.8
Perihelion:          41.08269573 +/-    0.0092
Aphelion:            47.77781327 +/-    0.0100
Period (y)              296.1600 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -45.98472367 +/-    0.0034
Ecliptic Y           12.32258262 +/-    0.0009
Ecliptic Z            0.56495607 +/-    0.0000
Ecliptic XDOT        -0.00067593 +/-    0.0000
Ecliptic YDOT        -0.00230491 +/-    0.0000
Ecliptic ZDOT         0.00003025 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.61050335 +/-    0.0033
Geocenter to KBO     46.73877615 +/-    0.0035
# Hcoef:  6.61

The following table shows the complete astrometric record for 02CY154. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (02CY154) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.40649  11 07 54.09   +06 19 54.8   22.6R 02CY154   695  Cf0336      
2002 02  06.49976  11 07 53.78   +06 19 56.9         02CY154   695  Cf0336      
2002 02  07.51447  11 07 50.19   +06 20 20.4         02CY154   695  Cf0336      
2002 03  20.22673  11 05 09.35   +06 37 16.9         02CY154   695  Cf5529      
2002 03  20.35104  11 05 08.87   +06 37 20.2         02CY154   695  Cf5529      
2003 03  30.20052  11 08 33.31   +06 16 50.1   22.8R 02CY154   695  Ci0065      
2003 03  30.29729  11 08 32.93   +06 16 52.3         02CY154   695  Ci0065      
2003 04  30.31900  11 06 59.96   +06 26 20.1   23.4R 02CY154   568  Ci0065      
2003 05  01.28422  11 06 57.91   +06 26 31.7         02CY154   568  Ci0065      
2003 05  01.37205  11 06 57.76   +06 26 33.6         02CY154   568  Ci0065      
2015 02  18.30007  11 58 45.46   +01 03 10.7   23.5R 02CY154   695  C~1M63      
2015 02  18.39381  11 58 45.13   +01 03 12.9         02CY154   695  C~1M63      
2015 02  18.48230  11 58 44.80   +01 03 14.7         02CY154   695  C~1M63      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00    -0.21       0.00    -0.07
  2   0.0003     -5.07     0.10       0.14     0.06
  3   0.0030    -63.52    -0.17       1.07     0.41
  4   0.1145  -2667.45     0.05      10.82     0.12
  5   0.1148  -2675.32     0.19      11.10     0.46
  6   1.1411    610.61     0.36      56.46     0.00
  7   1.1414    604.54     0.15      56.29    -0.11
  8   1.2263   -893.17    -0.09      42.64    -0.28
  9   1.2290   -925.84    -0.29      41.51    -0.84
 10   1.2292   -928.63    -0.10      42.39     0.14
 11  13.0319  50421.94     0.21     629.33     0.13
 12  13.0321  50416.20     0.04     629.36     0.16
 13  13.0324  50410.63    -0.26     629.01    -0.20

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

02CY154    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.154    44.175    44.134
ecceobj         0.082     0.081     0.082
incobj          0.980     0.980     0.980
qmin           39.931    39.956    39.895
qmax           48.985    49.003    49.038
amean          44.339    44.360    44.326
amin           43.981    44.005    43.972
amax           44.714    44.738    44.713
emean           0.080     0.080     0.081
emin            0.065     0.064     0.065
emax            0.096     0.096     0.097
imean           1.243     1.236     1.249
imin            0.544     0.543     0.545
imax            1.831     1.819     1.842
excite_mean     0.084     0.083     0.084
fracstop        1.000     1.000     1.000
cjmean          3.097     3.097     3.097

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       187.8     187.7     188.3
kozaiamp        179.9     180.0     180.0